Unless you plan on hanging on to it for 4 or more years I wouldn't worry about it. Most people retire their phones long before the battery becomes useless.
Welcome to Android Central! The main thing I would caution against is not to let it drain to zero on a regular basis. The ideal charging range is 20-80%, but it can be unfeasible in daily practice to limit charge to 80%, so 20-100% is a reasonable compromise.